Power steering apparatus



(No Model.) 3 Sheets-Sheet 1, F. G. LANG. POWER STEERING APPARATUS.

Patented Apr. 29, 1890.

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(No Model.) 3 Sheets-Sheet 2.

F. O. LANG. POWER STEERING APPARATUS.

No. 426,538. Patented Apr. 29, 1890.

WITNESSES: INVENTUR ii Ymkwlck Clam- WZLMMW hi4 TOW (No Model.) 3 Sheets-Sheet 3.

, P. O. LANG.

POWER STEERING APPARATUS.

7 L wig IIV fraclexickllm Patented Apr. 29, 1890.

. f. u. ATTORNEY z UNITED STATES PATENT OFFICE.

FREDERICK C. LANG, OF HOBOKEN, NEIV JERSEY.

POWER STEERING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 426,538, dated April 29, 1890.

Application filed July 26, 1889. Serial No. 819,136, (No model.)

To all whom it may concern: V piston is adapted to follow the stroke of the Be it known that I, FREDERICK C. LANG, a valve in either direction, and to reduce the citizen of the United States, and a resident of length of the strokes of said piston I make Iloboken, in the county of Hudson and State use of a reducing cone or drum J J, the

5 of New Jersey, have invented a new and usesmaller wheel J being connected to the valveful Improvement in Power Steering Appararods '0 cl by a rope S S, secured to and wound tus, of which the following is a specification. about the same and connected to the said My invention has reference to improve valve-rods, said rope passing over suitable 6o ments in power steering apparatus; and it guide-pulleys s s. The larger wheel J is [0 consists, essentially, in interpolating in the connected with the ropes P P from thepilotordinary hand steering-gear an engine havwheel by a rope S S, secured to and wound ing its valve connected with the ropes from about said wheel and having its ends secured the pilot-wheel and its piston with the rudto the said wheel-ropes. lhe piston-rods C der, all being so arranged that the hand D are connected with the rudder by means of I 5 steering-gear remains the same as before in arope U U, secured to and wound about the all its details,'while the engine furnishes the drum I on the rudder-post. In this example requisite power and follows the movements I have shown the radius of the drum I to be of the hand steering-gear. In addition to this, about one-third the length of the tiller T. in case of accident to the engine or parts ap- Consequently the wheels J I of the cone 2o pertaining thereto the hand steering-gear remust bear the same ratio to each other, in

mains operative. order that the ultimate movement of the rud- In the accompanying drawings, Figure 1 der induced by the power steering-gear will represents a plan view of the general an be the same as would result from the hand rangement of the parts according to my insteeringgear.

25 vention, a double act-ing engine being an In Fig. 2 I use an engine comprising in its ployed to furnish the power. Fig. 2 is a simistructure two single-acting cylinders for suplar view showing two single-acting engines plying power. The general arrangement and or cylinders employed to the same end. Fig. connections are the same in this case as be- 3 is a longitudinal section of one of the cylfore, and can be readily understood without 0 inders of Fig. 2, said figure being drawn to a further description.

larger scale than the preceding figures. Fig. The engine made use of in Fig. 1, (see Fi 4 is a similar section of the engine shown in 4,) for which I have filed an application for Fig. 1, drawn to the same scale as Fi Fig. 'Letters Patent of the United States, said ap- 5 is a cross-section of a detail part. plication bearing date April 15, 1889, Serial 5 Similarlettersindicate correspondingparts. No. 305,079, consists, essentially, of a eylin- In the drawings, referring at present to der containing a piston 13, having two piston- Fig. 1, the letter? designates the pilot-wheel, rods 0 D, to which piston is connected a slid- R is the rudder, T the tiller, and P P are the ing valve-seat H, upon which can travel a ropes or chains leading from the pilot-wheel valve F, having two valve-stems c d, the whole 40 to the tiller, all constructed and arranged as being so arranged that when the valve F is usual in hand steering-gears. IVithin this moved in either direction the piston follows hand steering-gear I interpolate an engine A it and has its stroke determined by the length of a suitable construction and connect the of the stroke of said valve. 5 valve-stems 0 cl thereof with the ropes P I The engine made use of in Fig. 2, (see Fig.

5 from the pilot-wheel at points intermediate 3,) for which I have filed an application for between the latter and the tiller, peferably at Letters Patent of the United States, said appoints nearer to the pilot-wheel than to the plication being dated March 13, 1889, Serial tiller. The piston-rods O D of the engine are No. 303,138, consists of two single-acting cylconnected to the rudder, preferably to adruin inders A, each provided with a piston B,

50 I, mounted rigidly upon the rudtlenpost. having a red C or D extending from one I11 the example illustrated in Fi lI make side thereof and a tubular valve-chest D use of a double-acting engine in which the from the otherside, which valve-chest extends chest D is a piston-valve G, governing suitable by-ways 3 andiin the same and having a stem 0 projecting through the steam-chamber E, the whole being so constructed that when the valve is moved in one direction the piston follows it, the length of the stroke of the piston being determined by the length of the stroke of the valve.

The general operation of the apparatus is now as follows, reference being had to Fig. 1: If the pilot-wheel is turned in the direction of arrow 1', Fig. 1, the cone J J is turned in the direction of arrow 2, causing the valve to be drawn in the direction of arrow 3. The piston, following the stroke of the valve, causes the rudder to be turned in the direction of arrow 4. It will be seen that the ropes or chains P P from the pilot-wheel to the rudder tend to turn the latter in the same direction as the power apparatus. In practice the ropes or chains P P are permitted to hang somewhat slack, in order that the valve of the power apparatus will be moved to a limited extent on its seat before the rudder is turned by the hand steering-gear, so that the requisite power is furnished by the engine. To secure the ropes or chains to the reducing- .cone J J, Fig. 5, I form two openings j j in each of the same and pass the ends of the rope through said openings and then wind or coil the ropes or chains about the periphery of the wheels before securing the same to the valve-rods of the engines, the wheels being provided with spiral grooves to receive the ropes. 7

What I claim as new, and desire to secure by Letters Patent, is-

1. A steering apparatus consisting of a distinct hand steering-gear and an interpolated power steering apparatus, the engine having its valve connected with the hand steeringgear and its piston with the rudder, substantially as and for the purpose set forth.

2. A steering apparatus consisting of adistinct hand steering-gear and an interpolated power steering apparatus having the valve of its engine connected with the ropes or chains from the pilot-wheel and its piston with therudder, substantially as and for the purpose set forth.

3. A steering apparatus consisting of a distinct hand steering-gear and an interpolated engine having its valve connected to the pilotwheel through an intermediate device for reducing its movement and its piston connected with the rudder at a proportionate leverage with respect to the tiller, substantially as and for the purpose set forth. 1

In testimony that I claim the foregoing as my invention I have signed my name, in pres ence of two witnesses, this 24th day of July, 1889.

FREDERICK C. LANG. 

